Quick facts

Model ID bfl/flux-2-klein-4b

Source Vercel AI Gateway

Context Window -

Pricing -

Capabilities temperature control

Model overview

FLUX.2 [klein] 4B is an AI model from Vercel AI Gateway with an unpublished context window and text input support.

Public token pricing is not listed for this model in the current catalog source.

Model ID bfl/flux-2-klein-4b

Provider Vercel AI Gateway

Family flux

Status -

Knowledge Cutoff -

Release Date 2026-06-08

Input Modalities text

Output Modalities image

Context Window -

Input Limit -

Output Limit -

Tool Calling No

Reasoning No

Structured Output -

Temperature Control Yes

Open Weights No

Input Cost / 1M tokens -

Output Cost / 1M tokens -

Reasoning Cost / 1M tokens -

Cache Read Cost / 1M tokens -

Cache Write Cost / 1M tokens -